.nav_top{
    width: 100%;
    height: auto;
    float: left;

}

#pageDisplay {
}

#th1 {
    width: 20%;
}

#th2 {
    width: 50%;

}

#th3 {
    width: 30%;

}

#menu {
    height: 95%;
    position: fixed;
    top: 50px;
    border-style: none solid none none;
    border-color: rgba(32, 29, 43, 0.27);

}

.mainIframe{
    width: 84%;
    height: 100%;
    float: right;
    text-align: center;
    overflow: auto;
    text-align: center;

}


.mainIframe iframe {
    width: 100%;
    height: 100%;
    border: 0;
}

.page-header{
    text-align: center;
    width: 100%;
}